Literary usage of Pot metal

Below you will find example usage of this term as found in modern and/or classical literature:

1.Encyclopaedia Britannica, a Dictionary of Arts, Sciences, Literature and edited by Hugh Chisholm (1910)"dense enough, produced pot metal more heavily charged with colour. This was
wilfully streaked, mottled and quasi- ..."

2.Cyclopædia of India and of Eastern and Southern Asia, Commercial, Industrial by Edward Balfour (1871)"pot metal (copper and lead) is improved by ¡je addition of tin, and the three
metals will nix in almost any proportions. Zinc may be dded to put metal in ..."

3.The Encyclopaedia Britannica: A Dictionary of Arts, Sciences and General (1890)"In the case of plate glass the metal is, of course, uniformly coloured throughout,
but coloured sheet glass may either be composed of “pot metal “ or ..."

4.Journal by Royal Society of Arts (Great Britain) (1858)"The coloured glass thus produced was called pot metal, or pot metal glass, which
was blown in circular pieces or tables, similar to common window glass, ..."

5.The Dublin University Magazine: A Literary and Political Journal (1880)"Pot-metal glass is so called from being coloured with oxides of metals fused with
... Separate pieces of pot-metal glass are used for each colour required, ..."